Composition: ethyl cellulose, plasticiser, emulsifier and other solid ingredients and water.
RT-EAD aqueous coating solution is a commonly used slow controlled release coating material, is widely used in the preparation of coated slow controlled release tablets, micro-pills, granules ethyl preparation of skeleton type slow release tablets, using different ratios of RT-EAD/HPMC can be formed with different solubility of the coating film to regulate the rate of drug release.